---
title: "XRechnungRules – API-Referenz · Quittio"
description: "Business rules of the CIUS XRechnung 3.0 (BR-DE-…), its extension (BR-DEX-…) and XRechnung CVD (BR-DE-CVD-…), checked on the data model."
canonical_url: "https://quittio.dev/docs/api/Quittio/Country/DE/Rules/XRechnungRules"
locale: de
meta:
  "og:description": "Business rules of the CIUS XRechnung 3.0 (BR-DE-…), its extension (BR-DEX-…) and XRechnung CVD (BR-DE-CVD-…), checked on the data model."
  "og:image": "https://quittio.dev/og/quittio-de.jpg"
  "og:image:alt": "Quittio: E-Rechnungen für PHP und Laravel. Rechtssicher, validiert, archiviert, mit geprüfter Beispielrechnung."
  "og:image:height": "630"
  "og:image:type": image/jpeg
  "og:image:width": "1200"
  "og:title": "XRechnungRules – API-Referenz · Quittio"
  "twitter:image": "https://quittio.dev/og/quittio-de.jpg"
  "twitter:image:alt": "Quittio: E-Rechnungen für PHP und Laravel. Rechtssicher, validiert, archiviert, mit geprüfter Beispielrechnung."
---

> Index of every page on this site: [llms.txt](https://quittio.dev/llms.txt)

[API reference](https://quittio.dev/docs/api) / [Quittio](https://quittio.dev/docs/api/Quittio) \\ [Country](https://quittio.dev/docs/api/Quittio/Country) \\ [DE](https://quittio.dev/docs/api/Quittio/Country/DE) \\ [Rules](https://quittio.dev/docs/api/Quittio/Country/DE/Rules)

# XRechnungRules

final class in quittio/country-de

`Quittio\Country\DE\Rules\XRechnungRules` · [Source](https://github.com/Quittio/quittio/blob/v0.7.1/packages/country-de/src/Rules/XRechnungRules.php#L38)

Business rules of the CIUS XRechnung 3.0 (BR-DE-…), its extension (BR-DEX-…) and XRechnung CVD (BR-DE-CVD-…), checked on the data model.

Severity follows the flags of the official Schematron: "muss" rules (fatal) are errors, "soll" rules (warning) warnings and BR-DE-TMP-32 (information) an info. The official validation (KoSIT validator) remains authoritative.

## Methods \#

| Method | Description |
| --- | --- |
| `::all()` | |
| `::hasServiceDate()` | Delivery date, invoicing period or a line period on every line. |

### `all()`#

```
public static function all(): list<Rule>
```

static

<dl><dt>Returns</dt>
<dd><code>list&lt;<a href="https://quittio.dev/docs/api/Quittio/Core/Validation/Rule">Rule</a>&gt;</code></dd>
</dl>

### `hasServiceDate()`#

```
public static function hasServiceDate(InvoiceData $invoice): bool
```

static

Delivery date, invoicing period or a line period on every line.

| Parameter | Type | Description |
| --- | --- | --- |
| `$invoice` | `[InvoiceData](https://quittio.dev/docs/api/Quittio/Core/Data/InvoiceData)` | |

<dl><dt>Returns</dt>
<dd><code>bool</code></dd>
</dl>

```json
{"@context":"https://schema.org","@graph":[{"@id":"https://quittio.dev/#website","@type":"WebSite","description":"E-Rechnungen für PHP und Laravel: ZUGFeRD, XRechnung und Peppol erstellen, prüfen, lesen und archivieren.","inLanguage":"de-DE","name":"Quittio","url":"https://quittio.dev/","publisher":{"@id":"https://quittio.dev/#identity"},"workTranslation":{"@id":"https://quittio.dev/en#website"}},{"@id":"https://quittio.dev/docs/api/Quittio/Country/DE/Rules/XRechnungRules#webpage","@type":"WebPage","description":"Business rules of the CIUS XRechnung 3.0 (BR-DE-…), its extension (BR-DEX-…) and XRechnung CVD (BR-DE-CVD-…), checked on the data model.","name":"XRechnungRules – API-Referenz","url":"https://quittio.dev/docs/api/Quittio/Country/DE/Rules/XRechnungRules","isPartOf":{"@id":"https://quittio.dev/#website"},"potentialAction":[{"@type":"ReadAction","target":["https://quittio.dev/docs/api/Quittio/Country/DE/Rules/XRechnungRules"]}],"primaryImageOfPage":{"@id":"https://quittio.dev/#logo"}},{"@id":"https://quittio.dev/#identity","@type":"Organization","description":"Open-Source-Bibliothek für E-Rechnungen in PHP und Laravel (ZUGFeRD, XRechnung, Peppol) und Quittio Managed.","email":"kontakt@niklasforst.de","legalName":"Niklas Forst – Softwareentwicklung","name":"Quittio","url":"https://quittio.dev","founder":{"@type":"Person","name":"Niklas Forst","url":"https://quittio.dev/ueber"},"logo":{"@id":"https://quittio.dev/#logo"},"sameAs":["https://github.com/Quittio/quittio","https://packagist.org/packages/quittio/quittio"]},{"@id":"https://quittio.dev/#logo","@type":"ImageObject","caption":"Quittio","contentUrl":"https://quittio.dev/logo.png","inLanguage":"de-DE","url":"https://quittio.dev/logo.png"}]}
```